The phrase identifies a selected kind of apparel meant for celebratory put on on October thirty first. It references a personality named Grasp Shake, acquainted from the animated tv program Aqua Teen Starvation Drive, and connects that character to the custom of dressing in costume for Halloween. The terminology suggests a dressing up designed to resemble or signify the aforementioned character.
Any such costume permits people to precise fandom and take part in well-liked tradition in the course of the Halloween vacation. The choice to embody this character might be influenced by elements equivalent to private choice for the present, comedic worth, or the will for a recognizable and doubtlessly humorous outfit. Historic context suggests the recognition of this as a dressing up possibility rises and falls with this system’s cultural relevance.